representing data in schemas and records examples

representing-data.md

Representing Data

Schemas + Records Examples

Schema

Tuples + Tables + Relations

LEAGUE
--------------
id                : INTEGER
name              : TEXT
	
	
TEAM
--------------
id                : INTEGER
name              : TEXT
year_established  : INTEGER
league_id         : INTEGER

	
PLAYER
--------------
id                : INTEGER
first_name        : TEXT
last_name         : TEXT
height            : INTEGER
team_id           : Integer

RECORDS

Saved in Tables as:

• Rows (each record)
• Columns (fields for a record)

All Records must have: a primary key

TEAM
--------------
id                : 1
name              : "Angry Birds"
year_established  : 2016

id                : 2
name              : "Dry Markers"
year_established  : 1998

	
PLAYER
--------------
id                : 1
first_name        : "Bill"
last_name         : "Goodguy"
height            : 188
team_id           : 2

id                : 2
first_name        : "Jim"
last_name         : "Badguy"
height            : 173
team_id           : 2

id                : 3
first_name        : "Jill"
last_name         : "Nicegirl"
height            : 190
team_id           : 1